Versatility: Haimont dry bag can float on water after being rolled and buckled, so you can track your gear easily, no more worrying about your items getting wet. Perfect for boating, SUP, kayaking, paddling, sailing, canoeing, surfing, or having fun on the beach. IPX8 Waterproof Phone Case: IPX8 Certified waterproof phone case would be offered as a free gift, which is suitable for phones up to 6.7 Inches. High-definition window and touch-friendly design with 100% secure seal lock which is perfect for all water sports. Multiple Size & Carry Style: 10L & 20L dry bag include one adjustable and removable shoulder strap for cross-body, 30L & 40L dry backpack with large capacity include two straps for backpack-style carrying, meet your demands on different occasions. Easy to Use & Tear Resistant: Just put your gear into the dry bag, grab the top woven tape and roll down tightly 3 to 5 times, then clip the buckles to complete the seal; the whole process is very quick. Reinforced stress point of D-rings with double sewing, no ripping again, even for heavy load. 100% Waterproof & Durable: Haimont Dry Bag Backpack is made of wear-resistant 500D tarpaulin with high frequency welded seams for waterproof protection and durability, making sure to keep your items and valuables dry when you do water sports.